Steam-boiler furnace.



PATENTED APR. 2, 1907.

I. H. BUYER.

STEAM BOILER FURNACE.

APPLICATION FILED JAN. d, 1906.

3 SHEETS-SHEET l.

wane-Me:

PATENTED APR. 2, 1907.

I. H. BUYER. STEAM BOILER FURNACE. APPLICATION TILED JAN. B 1906.

3 SHEETS-SHEET 2 N m x Hi l Jkaaa y Qmmm L 813 K M210 14 y F WW M No. 849,103. PATENTED APR. 2, 1907, I. H. BUYER.

STEAM BOILER FURNACE.

APPLICATION FILED JAN. 8, 1906.

3 SHEETS-SHEET 3.

if Q

We 6mg Qvmmw UNITED sTATEs PATENT oEEIoE.

IsAAo H. BOYER, or MUNCIE, INDIANA. ISTEAIM-BQILER FURNACE;

Specificationof Letters Patent.

Patented April 2 1907.

Application filed January 8,1966. gerial No. 295,029.

' provements in Steam-Boiler Furnaces; and

I' do declare the following to be a full, clear,

and exact description of the invention, reference being had to the accompanying drawings, and to the letters and figures. of reference marked thereon, which form a part of this specification.

This invention relates to apparatus for.

producing steam from water for industrial purposes, the invention having reference particularly to producers that include furnaces in which eat is generated from fuel and the arrangement of evaporating vessels or boilers in which the water may be converted into steam.

Objects of the invention are to provide a steam boilerfurnace construction whereby steam may be produced economically with respect to the consumption of fuel and whereby the heat from the fuel may be utilized to the greatest advantage to rapidly produce the steam. I

A further object isto provide a steamboiler furnace the operation of which by the consumption of coal or similar fuel the highest degree of perfection may be attained in the combustion of fuel, so as toavoid losses due to unburned gases which commonly prove wasteful in the form of smoke emission.

With the abovementioned and minor objects in view the invention consists in an improved steamroducer comprising, broadly stated, a nove form of furnace, a novel arran em'ent of boiler or evaporation vessel wit respect. to the furnace, improved forms and arrangements of heat-passages for conducting the furnace heat transvprsely to the longitudinal axis of the boiler, and in a novel,

arrangement of feed-water heater =transversely to the direction of the heat-current toward the chimney; and the invention con sists, further, in the novel parts andthe combinations and arrangements of arts, as hereinafter particularly describe and claimed. I

Referring to the drawings, Figure 1 is a front elevation of a steam-producer con structed substantially in accordance with the invention; Fig; 2, a fragmentary vertical sectional view on the line A A in Fig. 1; Fig. 3 a vertical sectional View approximately on the arches having projections i.

the flames to the line B B in Fig. 1; Fig. 4, a horizontal Similar reference characters in the differ-' vent figures of the drawings designate corresponding elements or features.

' In a practical embodiment of the invention a front furnace-wall a, having suitable fire-doors b and ash-pit doors 0, is provided, there being suitable openings in the Wall that are closed by the doors. A rear furnace wall (1' is erected opposite to the front wall,

and side Walls d and d connect the front and rear walls.

middle portion being inclined, as indicated particularly in Fig. 3, the wall having a lining of fire-brick e, the face of which has a multiplicity of projections f. Suitable grates g are arrangedin the fur ace thus provided b the walls, and above the grates are fire-brici arches h, of suitable number, extending over theforward ortion of the grate area at a suitable heigl fttherefrom, the under side of The arches are of suitable width, so as to extend from the front wall 0, toward the rear wall d asfar as may be desired, leaving an opening for along the face of the rear wall. One or more archesmay be provided, according to the di-,

mensions of the furnace, there being a suitable number of partitional walls is erected in the furnace when required to support ad-' jacent ends of the arches when two or more arches ma be desired. The sides of the furnace and the partitions are also lined with the bricks having the projections on their faces.

Two counterpart hollow water-heads F and F comprise parts of the furnace-Wall's and are mounted on the side walls (1 and d one on either wall, oppositely arranged. The inner wall of each water-head has a relatively large opening, andan evaporator G, preferably of tubular form, extends from one to the other openin and is attached at one end thereof to the inner Wall of the water-head F the opposite end of the evaporator having the lower portion thereof attached to the inner wall and the upppr portion thereof extending to and attac ed to the outer wall of the sectionalview approximately on the line C C in Fig. 1, corresponding approximately to' the line C C in Fig. 3; Fig.- 5, a vertical secpass upwardly from the grates The rear wall dhas a vertical lower portion and vertical upper portion, thewater-head F, there being lateral wings land and attached thereto and also to the inner" and outer walls, so as to divide the water- 7 head F into a lower water-chamber "It, commumeeting with the interior of the evaporator,

- and an upper chamber n, that affords a steamwater-heads, as will further appear.

chamber. The bottom of the evaporator G is relatively close to the inner end of the arch or arches h, and a curved wall m extends undera portion of the evaporator from the front wall a to the top of the arch or arches, pro viding a narrow neat-passage from the rear of the furance around the forward side of the evaporator, the passage being continued over the top of the evaporator as a result of building a roof over the evaporator that extends upwardly from the front Wall a between tge T e evaporator G may be made in various shapes, but for obvious reasons may be constructed more cheaply and strongly in circular form. The evaporator includes, besides the shell or body portion thereof, a water-divider H, that is supported in the shell suitably near the bottom'thereof. Said water divider has a suitable number of small drain-holes tin the bottom thereof, there being a head it closing one end and a head 1), having a manhole w at the opposite end of the shell of the waterdivider.

At opposite sides of the shell of the evaporator (x are suitable supports, preferably water-tubes 0 and 0, connectedto the inner thereof.. Fire-bricks 'r are placed between and over the tubes p and extending collectively down to the curved wall m, so that an arch is formed over the evaporatorhell with a h atassage formed thereby, there being a suita le cover extendin from the front wall a over the arch and the superheatin tubes. A horizontal furnace-top s exten s from the top of the rear wall (1 of the furnace to the rear side of the shell of the evaporator G, there being a combustiom-chamber formed under he vop s between the evaporator and the -rear furnace-Wall communicating with the heat-passage that extends overthe evaporator to the upper side of the top 8, from whence the gases of combustion may escape from the furnace structuref Any suitable provision may be made for forcin feed-waterinto the lower chamber n of the waterhead F. A steam-pipe connection I is atof the steam from the st cam-chamber n, and

a safe.y-'valve J is mounted on the water- 'mounted on suitable foundations and are joined to the water-heads F and F or may be constructed as parts thereof with partitions w and y between them, the partition y having an opening 7 therein for \he passage of feed-water into the chamber n, and the draftduct is arranged between "the two waterheads K and K, with a passage 8 thereto formed above the rear walld, communicatin with the heat-passage that is-above the shell of the evaporator G. The water-heads K and K may be of any suitable height, and, as shown specifically, the waterhead K has two vertical transverse partition's 9 and 10, thus forming three chambers 12, 13, and 14, the water-head K having one similar partition 11 arranged in a plane between the partitions 9 and 10, forming two chambers 15 and 16.

A floor 17 and a roof 18, extending between the water-heads K and K, form the bottom and the top, respectively, of the draftduct, the end structure of which is formed by a Wall 19.

A feed-pipe L is connected with the chamber 12 (preferably at the top thereof) of the tions 9 and 10, so that the draft-current is caused to deviate from a direct course, passing under and over alternate walls.

A multiplicity of water-tubes are arranged to form several series of circulating-ducts between the water-heads K and K, being connected thereto and extending across within the draft-duct, there being a series of ducts N connecting with the chamber 12 and the chamber 15, a series N connecting with the chamber 15 and the chamber 13, a series N connecting with the chamber 13 and the chamber 16, and another series N connecting with the chamber 16 and the chamber 14, the several series of ducts being separated partially by the baffle-walls 65 tached to the water-head F for the delivery 1 ranged above the series N or N, if desired.

There may be additional series of circulating-tubes ar- A pair of flues P and P have connection with the draft-{duct and discharge into a smoke-box Q, to which is attached a chimney connection R.

Such inclosing walls are employed as are suitable to the purpose of the invention.

Various modifications may be made fairly within the scope of the invention with respect to the grate-surface and other details of construction. Also any suitable number and size of evaporators may be provided, the single one serving to illustrate the invention, and the rear furnace-wall may have a part thereof inclined at various degrees of angularity to suit various dimensions of furnaces and capacities of evaporators.

In practical use, having supplied the feedwater heater and the evaporator with a suitable uantity of water, which may be indicated y suitable gages, a fire may be started in the furnace, and the smoke and heat will pass from the fire through the heat-passage under and about the evaporator G and thence through the draft-duct among the seriesof circulating-tubes to the chimney, as indicated by arrows in Fig. 3, the shallow body of water that may be on the bottom of the evaporator-shell .beneath the water-divider H being rapidly heated to the boilingpoint and converted into, steam, which will rise at the sides of the water-divider into the upper portions of the evaporator-shell and the water-head F, and thence pass through the superheating-tubes Q into the steamchamber n to be utilized for such purpose as may be desired. When the fire begins to generate heat, the projections f and i on the faces of the furnace-walls and arches will become heated in advance of the bodies of the bricks and willtherefore early begin to radiate the heat and at all times will afford augmented radiating-surface. The projections iun'der the arches will cause the hot gases and smoke to roll and mix in their passage to the combustion-chamber and heat-passage, thereby aiding combustion, and this result will be contributed to by the projections f on the rear wall d of the furnace. The curved inclined wall m will become heated and reflect the heat toward the under side of the evaporator, while causing the flames to pass close to 'the evaporator. After the heatcurrent produces the steam it asses'at high temperature under the su er eating-tubes with beneficial results an gradually imarts its heat to the feed-water, which circuates to and fro across the path of the heatcurrent, so that the resultant heat from the fuel may be utilized to the fullest extent.

The course of the water circulation from the supply-pipe L to the evaporator G is indicated b arrows in Figs. 2, 4, 5, "and 6, and it will e a parent that the feed-water may be but slig tly heated on its entrance to the primary heater, but will increase in temperature rapidly in its-circulation through the hotter gases nearer to the evaporator, so that the water may be heated to the boilingpoint as rapidly as it enters the evaporator, thus requiring the minimum degree of inltlal heat in producing the steam, with consequent economy in fuel.

Having thus described is claimed as new is 1. A steam-producer including a furnace comprising a front wall, a rear wall, a pair of opposing side walls, an arch extending from the front wall nearly but not entirely to the rear wall, an upwardly-inclined wall extending from the inner end of the arch toward the front wall, and an evaporator extending longitudinally near the rear wall and the curved wall and spaced therefrom to form a combustion-chamber and also' a passage-way for the products of combustion.

the invention, what 2. A steam-producer including afurnace comprising a front wall, a rear wall having an inclined part, an arch extending from the front wall toward but not to theinclined part of the rear wall, opposing side walls, an in clined curved wall extending from the inner end of the arch upwardly toward the front wall, and an evaporator arranged adjacent to the curved wall partially above the inclined part of the rear wall and spaced therefrom to form a passage-way for the products of combustion. I

3. A steam-producer including a furnace comprising a front Wall, opposing side walls, a rear wall having an inclined part provided with a lining composed of bricks having each a body portion projecting beyond side. portions thereof, anarch extending from the front wall toward the inclined part of the rear wall, an inclined curved wall extending from the inner end of the arch upwardly toward the front wall, and an evaporator arranged opposite to the curved wall and spaced therefrom to form a passage-way for the products of combustion.

4. A steam-producer including a furnace comprising a front wall, a rear wall, side walls a plurality of arches extending from the frontwall toward but not to the rear wall, supports for the arches, an inclined wall having a concave upper surface and extending from the inner en s of the arches upwardly toward the front wall, an evaporator arranged opposite to and spaced from the concave surface of the inclined wall to form a passage-way for the products'of combustion, a furnace-top extending from the rear wall to the evaporator and therewith forming a combustion-chamber, and a roof-wall extending from the inclined wall above and over the evaporator and spaced from the evaporator to form a passage-way for the products-of combustion.

5. steam-producer including a furnace comprisin a I out wall, a rear wall, side walls, a p urality of arches extending from side walls, a partition-wall partially support-- the front wall toward but not tothe rear wall, a su'pportinclosed by the walls collectively supporting an end of each one of the arches, an inclined wall extending from the inner end portions of the arches upwardly toward the front wall, and an evaporator arranged opposite to the inclinedwall and spaced therefrom to form a passage-way for the products of combustion.

6. A steam-producer including a furnace comprising a front wall, a rear wall, side walls having linings composed of bricks having each a projecting body portion extending beyond side portions thereof, an arch extending from the front wall nearly but not entirely to the rear wall, an evaporator extending longitudinally opposite to the rear wall and the end of the arch and spaced therefrom to form a combustion-chamber, a wall extending from the end portion of the arch and curved concavely on its top toward the front wall and spaced from the evaporator to form a passage-way from the combustion-chamber for the products of combustion, and a roofwallextending from the rear wall to the evaporator forming with the evaporator the top of the combustion-chamber.

7. A steam-producer including a furnace comprising a front wall, side walls, a plurality of arches extending from the front wall toward but not to the rear wall and having projections on the under side thereof, certain of said arches being partially supported by the ing said arches, an inclined wall extending from the inner end portions of said arches upwardly toward the front wall, and an evaporator arranged opposite to and spaced from the inclined wall to form a passage-way for the products of combustion.

8. A steam-producer including afurnace comprising a front wall, side walls, a rear wall having a lining composed of bricks having each a projecting body portion extending belongitudinally opposite to the rear wall an the end of the arch and spaced therefrom to form a combustion-chamber, and an inclined wall extending from the end portion of the arch opposite to the evaporator toward the front wall and spaced from the evaporator to form a passage-way for the products of combustion.

9. A steameproducer including a furnace comprising afront wall, a rear wall, side walls, an arch extending from the front wall toward but not to the rear wall and composed of bricks having projecting body portions extending beyond side ,portions thereof, an evaporator extending longitudinally opposite to'the rear wall and spaced therefrom to, form a combustion-chamber, and an inclined wall extending from the inner end portion of the arch upwardly toward the front wall and spaced from the evaporator to form a passage-way for the products of combustion.

10. Aisteam-producer including a furnace comprising afront wall, a rear wall side walls, a plurality of arches extending from the front wall toward but not to the rear wall, certain of the arches being partially supported by the side walls, a partition-wall partially supporting said arches and having projections on the faces thereof, an inclined wall extending from the inner end portions of said arches upwardly toward the front wall, and an evaporator arranged opposite to and spaced from the inclined wall to form a passage-way for the products of combustion.

In testimony whereof I affix my signature in presence of two witnesses.

ISAAC H. BOYER.

Witnesses HARRY D. PIERsoN, E. T. SILvIUs. 

